Chair shell



FIG. 1 is a perspective view of a chair shell showing our new design.

FIG. 2 is a front elevational view of the embodiment shown in FIG. 1.

FIG. 3 is a side elevational view of the embodiment shown in FIG. 1; and,

FIG. 4 is a rear elevational view of the embodiment shown in FIG. 1.

The broken lines shown in the Figures are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a chair shell, as shown and described. 